diff options
Diffstat (limited to 'libmpcodecs/vf.c')
| -rw-r--r-- | libmpcodecs/vf.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libmpcodecs/vf.c b/libmpcodecs/vf.c index 0b7014d17d..29fb5a2b55 100644 --- a/libmpcodecs/vf.c +++ b/libmpcodecs/vf.c @@ -558,6 +558,38 @@ void vf_clone_mpi_attributes(mp_image_t* dst, mp_image_t* src){ dst->qscale= src->qscale; } } + +void vf_queue_frame(vf_instance_t *vf, int (*func)(vf_instance_t *)) +{ + vf->continue_buffered_image = func; +} + +// Output the next buffered image (if any) from the filter chain. +// The queue could be kept as a simple stack/list instead avoiding the +// looping here, but there's currently no good context variable where +// that could be stored so this was easier to implement. + +int vf_output_queued_frame(vf_instance_t *vf) +{ + while (1) { + int ret; + vf_instance_t *current; + vf_instance_t *last=NULL; + int (*tmp)(vf_instance_t *); + for (current = vf; current; current = current->next) + if (current->continue_buffered_image) + last = current; + if (!last) + return 0; + tmp = last->continue_buffered_image; + last->continue_buffered_image = NULL; + ret = tmp(last); + if (ret) + return ret; + } +} + + /** * \brief Video config() function wrapper * |